[Bug 2122424] Re: package linux-headers-6.8.0-79-generic 6.8.0-79.79 failed to install/upgrade: installed linux-headers-6.8.0-79-generic package post-installation script subprocess returned error exit status 1

** Package changed: linux (Ubuntu) => v4l2loopback (Ubuntu)

** Summary changed:

- package linux-headers-6.8.0-79-generic 6.8.0-79.79 failed to install/upgrade: installed linux-headers-6.8.0-79-generic package post-installation script subprocess returned error exit status 1
+ Module /lib/modules/6.8.0-79-generic/kernel/v4l2loopback/v4l2loopback.ko.zst already installed (unversioned module)

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Title:
Module
/lib/modules/6.8.0-79-generic/kernel/v4l2loopback/v4l2loopback.ko.zst
already installed (unversioned module)

Status in v4l2loopback package in Ubuntu:
New

Bug description:
sudo apt upgrade:

```
update-initramfs: Generating /boot/initrd.img-6.8.0-71-generic
I: The initramfs will attempt to resume from /dev/dm-1
I: (/dev/mapper/ubuntu--vg-swap_lv)
I: Set the RESUME variable to override this.
Processing triggers for linux-image-6.8.0-79-generic (6.8.0-79.79) ...
/etc/kernel/postinst.d/dkms:
Autoinstall of module v4l2loopback/0.12.7 for kernel 6.8.0-79-generic (x86_64)
Module /lib/modules/6.8.0-79-generic/kernel/v4l2loopback/v4l2loopback.ko.zst already installed (unversioned module), override by specifying --force

Error! Installation aborted.

Autoinstall on 6.8.0-79-generic succeeded for module(s) hid-xpadneo nvidia.
Autoinstall on 6.8.0-79-generic failed for module(s) v4l2loopback(6).

Error! One or more modules failed to install during autoinstall.
Refer to previous errors for more information.
run-parts: /etc/kernel/postinst.d/dkms exited with return code 1
dpkg: error processing package linux-image-6.8.0-79-generic (--configure):
installed linux-image-6.8.0-79-generic package post-installation script subprocess returned error exit status 1
No apport report written because MaxReports is reached already
Processing triggers for libc-bin (2.39-0ubuntu8.5) ...
Errors were encountered while processing:
linux-headers-6.8.0-79-generic
linux-headers-generic
linux-generic
linux-image-6.8.0-79-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)
```

ProblemType: Package
DistroRelease: Ubuntu 24.04
Package: linux-headers-6.8.0-79-generic 6.8.0-79.79
ProcVersionSignature: Ubuntu 6.8.0-71.71-generic 6.8.12
Uname: Linux 6.8.0-71-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: kyzik 5321 F.... pipewire
kyzik 5325 F.... wireplumber
/dev/snd/controlC0: kyzik 5325 F.... wireplumber
/dev/snd/seq: kyzik 5321 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
Date: Tue Sep 9 09:32:09 2025
ErrorMessage: installed linux-headers-6.8.0-79-generic package post-installation script subprocess returned error exit status 1
HibernationDevice:

InstallationDate: Installed on 2023-09-29 (711 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
MachineType: LENOVO 21FWS1HQ00
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-71-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash resume=UUID=b9d8eafc-8e10-422a-89b3-80eb1580b7f7 vt.handoff=7
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal, 3.12.3-0ubuntu2
PythonDetails: /usr/bin/python3.12, Python 3.12.3, python-is-python3, 3.11.4-1
RelatedPackageVersions: grub-pc N/A
SourcePackage: linux
Title: package linux-headers-6.8.0-79-generic 6.8.0-79.79 failed to install/upgrade: installed linux-headers-6.8.0-79-generic package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to noble on 2024-10-25 (319 days ago)
dmi.bios.date: 07/26/2024
dmi.bios.release: 1.31
dmi.bios.vendor: LENOVO
dmi.bios.version: N3ZET44W (1.31 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21FWS1HQ00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76530 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.13
dmi.modalias: dmi:bvnLENOVO:bvrN3ZET44W(1.31):bd07/26/2024:br1.31:efr1.13:svnLENOVO:pn21FWS1HQ00:pvrThinkPadP1Gen6:rvnLENOVO:rn21FWS1HQ00:rvrSDK0T76530WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21FW_BU_Think_FM_ThinkPadP1Gen6:
dmi.product.family: ThinkPad P1 Gen 6
dmi.product.name: 21FWS1HQ00
dmi.product.sku: LENOVO_MT_21FW_BU_Think_FM_ThinkPad P1 Gen 6
dmi.product.version: ThinkPad P1 Gen 6
dmi.sys.vendor: LENOVO

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